CN2149042Y - Triphase source negative-phase sequence automatic regulator - Google Patents
Triphase source negative-phase sequence automatic regulator Download PDFInfo
- Publication number
- CN2149042Y CN2149042Y CN 93205387 CN93205387U CN2149042Y CN 2149042 Y CN2149042 Y CN 2149042Y CN 93205387 CN93205387 CN 93205387 CN 93205387 U CN93205387 U CN 93205387U CN 2149042 Y CN2149042 Y CN 2149042Y
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- CN
- China
- Prior art keywords
- phase
- phase sequence
- utility
- model
- regulator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a triphase power reversed phase sequence automatic regulator which can eliminate the hidden trouble of the damage of motor, instrument, etc., resulted from changeable power supply phase sequence. The utility model is composed of a micromotor, a forward and a reverse control circuits assembled on an insulating base, three relays fixed on the control circuit in series and contacts composed of moveable contacts and stationary contacts. The regulator has artful design and high independence and specificity. The regulator can estimate the power phase sequence signal in absolute accuracy. The two pairs of contacts have clear division of work. For any reversed phase power input regulator, the utility model can automatically regulate sensitively and quickly. The utility model is suitable for wide field.
Description
The utility model relates to the device that to adjust protection when the anti-phase phase sequence of a kind of three phase mains is powered automatically.
The three-phase power supply phase sequence that a variety of causes causes is unusual, will change electricity consumption three phase electric machine rotation direction, the equipment that some drive of motor mechanical device position of rests can not be reversed, phenomenon such as take place that often mechanical dislocation, fracture or motor counter-rotating infraction is burnt.Must not anti-phasely send the instrument and equipment of electricity especially to some valuable precisions, prestige association is maximum, loses more serious.At present, when some equipment chance three phase mains was anti-phase, phase line was manually changed in the processing of only cutting off the electricity supply, and could continue to use this power supply.Some equipment uses the travel switch protection, in case malfunctioning, inverting power supplies just there has not been protective effect.
The purpose of this utility model is at the existing problem of above-mentioned condition, provides a kind of three phase mains anti-phase phase sequence automatic regulator, and this adjuster can be eliminated the hidden danger that causes device damage such as electromechanics, instrument because of the phase sequence variation reliably.
The anti-phase phase sequence automatic regulator of the utility model three phase mains comprises an electrical micro-machine, is assembled in the forward and reverse control circuit on the insulating base, shell and the power input and the power output end that are exposed to shell is characterized in that: be located at and also be arranged in parallel 2 merely hit a relay J 2, J3 and 1 AC relay J1 in the forward and reverse control circuit on the base plate; Contact t on auxiliary relay J2, the J3 circuit
1, t
2Constitute by moving contact that can be installed in the bearing dish projection both sides on the micro-motor and the corresponding fixed contact that is provided with; Be provided with back-moving spring between bearing dish and the base plate.
The anti-phase phase sequence automatic regulator of the utility model three phase mains is followed three-phase power supply phase sequence according to the intrinsic phase sequence of three phase electric machine and is changed and the characteristics of forward and backward revolution, utilize three phase mains input electrical micro-machine to predict the phase sequential signal, by control relay circuit, and the normal phase sequence of prediction and unusual phase sequence adjustment handled back output, for can not out-phase preface electromechanics, equipment use such as instrument.Its course of action: after three phase mains is imported this adjuster, the phase sequential signal promptly is admitted to electrical micro-machine, if the three-phase power supply phase sequence of input is that A-B-C is identical with the electrical micro-machine phase sequence, electrical micro-machine is accepted behind the A-B-C phase sequential signal and is clockwise, approximately through 0.68 second, when being clockwise 90 °, the moving contact of bearing dish projection one side and the contact of the fixed contact of corresponding setting, the contact t of auxiliary relay J2 circuit
1Closed.At this moment, with contact t
1Relay coil in parallel gets electric and self-locking; A-B-C phase sequential signal is exported from the adjuster output, for using.The bearing dish is under the effect of back-moving spring, and moving contact breaks away from fixed contact, resets, and waits for and indicates signal next time.If the input three-phase power supply phase sequence is A-C-B, different with the intrinsic phase sequence of electrical micro-machine, electrical micro-machine is accepted to reverse behind the A-C-B phase sequential signal, through 0.68 second, promptly reverse 90 ° the time moving contact of bearing dish projection opposite side and the contact of the fixed contact of corresponding setting, the contact t of auxiliary relay J3 circuit
2Closed.At this moment, with contact t
2Relay coil in parallel gets electric and self-locking, and three pairs of normally opened contacts that seal in power supply are in parallel with two pairs of relay exchanges, and inverse case is just come by forward and reverse control circuit transposing, becomes behind the A-B-C phase sequential signal from the output of adjuster output, for use.The bearing dish is under the effect of back-moving spring, and moving contact breaks away from fixed contact, resets.
The anti-phase phase sequence automatic regulator of the utility model three phase mains is owing to utilized the constant characteristic of the intrinsic phase sequence of miniature threephase motor, add design cleverly, make this adjuster to power phase signal estimation absolutely accurate, two pairs of contact division of labor are clear and definite, independence with height, selectivity.Send into adjuster for any inverting power supplies, all can be sensitive, promptly automatically phase sequence is adjusted.This adjuster has simple in structure, rationally, is convenient to make and installs and easy to maintenance, long service life, advantage such as suitable application area is wide.
Concrete structure of the present utility model is provided in detail by the following drawings and embodiment.
Fig. 1 is an electrical schematic diagram of the present utility model;
Fig. 2 is the mechanical sound contact structure schematic diagram of the utility model adapted shown in Figure 1.
Embodiment: contrast accompanying drawing 1, J1 is an AC relay, and J2 and J3 are auxiliary relay, and R1, R2, R3, R are fusible link, and K1, K2 are startup, stop switch, and D is an electrical micro-machine, and A, B, C are power input, and A1, B1, C1 are power output end, t
1, t
2Be the contact.Contact t
1, be power input, A1, B1, C1 are power output end, t
1, t
2Be the contact.Contact t
1, t
2Being arranged on two fixed contacts of deciding on the plate 45,6 by moving contact 2,3 that can be installed in the bearing dish 1 projection both sides on the electrical micro-machine D axle 8 and correspondence constitutes.Bearing dish 1 and decide to be provided with between the plate 4 back-moving spring 7(and see Fig. 2).
Claims (1)
1, a kind of energy is eliminated the anti-phase phase sequence automatic regulator of three phase mains that changes the hidden danger that causes device damage such as electromechanics, instrument because of power phase, the power input and the power output end that comprise an electrical micro-machine, be assembled in forward and reverse control circuit, the shell on the insulating base and be exposed to shell is characterized in that:
A. be located at and also be arranged in parallel 2 relay J of merely hitting in the forward and reverse control circuit on the base plate
2, J
3With 1 AC relay J
1
B. auxiliary relay J
2, J
3Contact t on the circuit
1, t
2Being arranged on the fixed contact of deciding on the plate 45,6 by moving contact 2,3 that can be installed in the bearing dish 1 projection both sides on the electrical micro-machine D axle 8 and correspondence constitutes;
C. bearing dish 1 and decide to be provided with between the plate 4 back-moving spring 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93205387 CN2149042Y (en) | 1993-03-04 | 1993-03-04 | Triphase source negative-phase sequence automatic regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93205387 CN2149042Y (en) | 1993-03-04 | 1993-03-04 | Triphase source negative-phase sequence automatic regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2149042Y true CN2149042Y (en) | 1993-12-08 |
Family
ID=33788672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93205387 Expired - Fee Related CN2149042Y (en) | 1993-03-04 | 1993-03-04 | Triphase source negative-phase sequence automatic regulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2149042Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1331290C (en) * | 1995-10-20 | 2007-08-08 | 斯维则工程实验室公司 | Zero-sequence voltage direction polarizing element for protecting relay |
| CN100409019C (en) * | 2005-06-10 | 2008-08-06 | 北京四方继保自动化股份有限公司 | Zero sequence direction measurement element with negative sequence negative direction blocking |
-
1993
- 1993-03-04 CN CN 93205387 patent/CN2149042Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1331290C (en) * | 1995-10-20 | 2007-08-08 | 斯维则工程实验室公司 | Zero-sequence voltage direction polarizing element for protecting relay |
| CN100409019C (en) * | 2005-06-10 | 2008-08-06 | 北京四方继保自动化股份有限公司 | Zero sequence direction measurement element with negative sequence negative direction blocking |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |